How to switch two components in an array?

Question

I was wondering how to switch the components in an array. My goal is to rearrange this array in numerical order, but when I try it keeps throwing up the exception "Index 22 out of bounds for length 9"

for (int i = 0; i < intArray.length - 1; i++) {
    for (int j = 1; j < intArray.length - 1; j++)
        if (intArray[j - 1] > intArray[j]) {
            swap(intArray[j - 1], intArray[j], intArray);
        }
    System.out.print(intArray[i]);
    System.out.print(" , ");
}

public static void swap(int a, int b, int[] arr) {
    int x = arr[a];
    arr[a] = arr[b];
    arr[b] = x;

}

Answer 1

Try passing in the indices instead of the values of the array

i.e. Changing

if (intArray[j-1] > intArray[j]){
    swap(intArray[j-1], intArray[j], intArray);
}

to

if (intArray[j-1] > intArray[j]){
    swap(j-1, j, intArray);
}

Also your outermost loop runs 1 less than last element of intArray.

You could use

for (int i = 0; i < intArray.length; i++)

instead